Contrast between 2D inversion and 3D inversion based on 2D high-density resistivity data

作     者：冯德山 戴前伟 肖波 De-shan FENG;Qian-wei DAI;Bo XIAO

作者机构：中南大学地球科学与信息物理学院长沙410083 有色金属成矿预测教育部重点实验室长沙410083 

基　　金：Projects(41074085,41374118)supported by the National Natural Science Foundation of China Project(20120162110015)supported by Doctoral Fund of Ministry of Education of China Project(NCET-12-0551)supported by Program for New Century Excellent Talents in University,China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2014年第24卷第1期

页      码：224-232页

摘      要：The 2D data processing adopted by the high-density resistivity method regards the geological structures as two degrees, which makes the results of the 2D data inversion only an approximate interpretation;the accuracy and effect can not meet the precise requirement of the inversion. Two typical models of the geological bodies were designed, and forward calculation was carried out using finite element method. The forward-modeled profiles were obtained. 1% Gaussian random error was added in the forward models and then 2D and 3D inversions using a high-density resistivity method were undertaken to realistically simulate field data and analyze the sensitivity of the 2D and 3D inversion algorithms to noise. Contrast between the 2D and 3D inversion results of least squares inversion shows that two inversion results of high-density resistivity method all can basically reflect the spatial position of an anomalous body. However, the 3D inversion can more effectively eliminate the influence of interference from Gaussian random error and better reflect the distribution of resistivity in the anomalous bodies. Overall, the 3D inversion was better than 2D inversion in terms of embodying anomalous body positions, morphology and resistivity properties.

主 题 词：high-density resistivity method finite element method forward simulation least square inversion 2D inversion 3D inversion apparent resistivity 

学科分类：081801[081801] 081802[081802] 08[工学] 0818[工学-交通运输类] 

核心收录：

D　O　I：10.1016/S1003-6326(14)63051-X

馆 藏 号：203689330...